In May, Puerto Rico Governor Ricardo Rossello moved to file for bankruptcy after the island defaulted on $70 billion of bonds.

Puerto Rico is a US territory with no voting rights. Though its citizens can move freely throughout the country and serve in the US military, they cannot vote and have little ability to sway policies that affect them. Puerto Rico struggles with a weak tax base and a brain drain where highly qualified citizens generally move to the US mainland.

Replying to Trump’s tweet, Senate Minority Leader Chuck Schumer asked the following question: “Why do you continue to treat Puerto Ricans differently than other Americans when it comes to natural disasters?”